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JEE Mains · Physics · STD 11 - 9.1 fluid mechanics

दर्शाये गये चित्र में, दो नलियों के मेनोमीटर में अन्तर \(5 \;cm\) हैं। \(A\) एवं \(B\) नलियों के अनुप्रस्थ काट क्रमशः \(6\; mm ^{2}\) एवं \(10\; mm ^{2}\) हैं। नली में प्रवाहित पानी की दर हैं \(\left( g =10 \;ms ^{-2}\right)\)

  1. A \(7.5\)
  2. B \(8.0\)
  3. C \(10.0\)
  4. D \(12.5\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(7.5\)

Step-by-step Solution

Detailed explanation

According to \(Bernoulli's\) theorem, \({p_1} + \frac{1}{2}\rho v_1^2 = {P_2} + \frac{1}{2}\rho v_2^2\) \(\therefore v_2^2 - v_1^2 = 2gh\) \(...\left( 1 \right)\) According to the equation of continuty \({A_1}{v_1} = {A_2}{v_2}\) \(...(2)\)…
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